YMGI WMMS-30CH-V2B(59)5, Service Manual, Page: 51 / 81

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51
Compressor demagnetization protection Viewing malfunction code through
remote controller within 200
seconds.
Displayed directly on nixie tube
after 200 seconds
HE
Malfunction of voltage dropping for DC bus-bar U3
Module high temperature protection P8
Refrigerant lacking or blockage protection of system (not
available for residential ODU)
F0
Charging malfunction of capacitor Hardware malfunction PU
High pressure protection of system Hardware malfunction E1
Low pressure protection of system (reserved) Hardware malfunction E3
Detection status of wrong connection of communication wire
or malfunction of electronic expansion valve
Operation status
dd
Mode conflict Operation status E7
Refrigerant recycling mode Operation status Fo
X-fan Operation status AL
Defrosting or oil return in heating mode Operation status H1
Start failure of compressor
Viewing malfunction code through
remote controller within 200
seconds.
Displayed directly on nixie tube
after 200 seconds
Lc
High discharge temperature protection of compressor E4
Overload protection E8
Whole unit overcurrent protection E5
Compressor phase current protection P5
Compressor desynchronizing H7
Compressor phase-lacking/phase-inverse protection Ld
IPM modular protection H5
DC bus-bar low voltage protection PL
DC bus-bar high voltage protection PH
PFC protection HC
The four-way valve is abnormal U7
Start failure of compressor Lc